Fair Value Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - Fair Value, Measurements, Recurring [Member] $ in Millions	9 Months Ended
	Jul. 03, 2015 USD ($)
Fair Value, Assets [Roll Forward]
Auction rate securities Ending Balance	$ 2.3
Foreign currency derivative, Ending Balance	3.6
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets [Roll Forward]
Auction rate securities Ending Balance	2.3
Foreign currency derivative, Ending Balance	3.6
Fair Value, Inputs, Level 3 [Member] | Auction Rate Securities [Member]
Fair Value, Assets [Roll Forward]
Auction rate securities Beginning Balance	2.3
Changes in fair value included in earnings	0.0
Auction rate securities Ending Balance	2.3
Fair Value, Inputs, Level 3 [Member] | Derivative [Member]
Fair Value, Assets [Roll Forward]
Foreign currency derivative, Beginning Balance	0.7
Changes in fair value included in earnings	2.9
Foreign currency derivative, Ending Balance	$ 3.6